Micro channel plate gains for Ta10+-Ta44+ ions, measured in the energy range from 3.7 keV/q up to 150.7 keV/q

The procedure of calibration of a detector assembly consisting of a micro c hannel plate detector operated in a Chevron configuration is described. The analog particle gains of Ta ions with charge states ranging from q = 10(+) to 44(+) and ion impact energies from 3.2 to 153.2 keV/q have been measure d. For the investigated range of ion impact energies we have stated that fo r tantalum charge states of 10(+)-20(+) the secondary ion-electron emission coefficient is dominated by the kinetic emission of electrons. Potential e ffects being visible for the charge states above 20(+). (C) 1999 Elsevier S cience B.V. All rights reserved.